Cork stopper



FIG. 1 is a perspective view of one embodiment of a cork stopper of the present application;

FIG. 2 is a front elevation view of the cork stopper of FIG. 1;

FIG. 3 is a rear elevation view of the cork stopper of FIG. 1;

FIG. 4 is a left side elevation view of the cork stopper of FIG. 1;

FIG. 5 is a right side elevation view of the cork stopper of FIG. 1; and,

FIG. 6 is a top view of the cork stopper of FIG. 1. 

CLAIM The ornamental design for a cork stopper, as shown and described. 